Pneumatic Cylinders are mechanical devices used to impart a force from a fluid, typically compressed air. Pneumatic cylinders are available in a variety of styles, including tie rod, compact, round body, rotary, gripper, escapement, guided, and rodless cylinders. Other features of pneumatic cylinders include the ability to have multiple strokes or a full stroke with intermediate stopping points, adjustments to control the amount of extension or retraction of a given pneumatic cylinder and locks that can serve as safety mechanisms in case the machine experiences loss of air pressure. A typical pneumatic cylinder consists of a piston, piston rod, and a body or tube. Compressed air enters at one end of the tube, imparting force on the piston, which is then displaced in order to balance the force exerted on the piston.